APA (7th ed.) Citation

Phillips, P. (1987). An old-earth creation model. Interdisciplinary Biblical Research Institute.

Chicago Style (17th ed.) Citation

Phillips, Perry. An Old-earth Creation Model. Hatfield, PA: Interdisciplinary Biblical Research Institute, 1987.

MLA (9th ed.) Citation

Phillips, Perry. An Old-earth Creation Model. Interdisciplinary Biblical Research Institute, 1987.

Warning: These citations may not always be 100% accurate.